Layered control of service interface for a breakout component in a mobile data network

ABSTRACT

Mobile network services are performed in a mobile data network in a way that is transparent to most of the existing equipment in the mobile data network. The mobile data network includes a radio access network and a core network. A breakout component in the radio access network breaks out data coming from a basestation, and performs one or more mobile network services at the edge of the mobile data network based on the broken out data. The breakout component includes a service interface that performs primary control by one system, and backup control by a different system.

BACKGROUND

1. Technical Field

This disclosure generally relates to mobile data systems, and morespecifically relates to a breakout component at the edge of a mobiledata network that performs services for broken out data, and includes aservice interface that performs primary control by one system, andbackup control by a different system.

2. Background Art

Mobile phones have evolved into “smart phones” that allow a user notonly to make a call, but also to access data, such as e-mails, theinternet, etc. Mobile phone networks have evolved as well to provide thedata services that new mobile devices require. For example, 3G networkscover most of the United States, and allow users high-speed wirelessdata access on their mobile devices. In addition, phones are not theonly devices that can access mobile data networks. Many mobile phonecompanies provide equipment and services that allow a subscriber to pluga mobile access card into a Universal Serial Bus (USB) port on a laptopcomputer, and provide wireless internet to the laptop computer throughthe mobile data network. In addition, some newer mobile phones allow themobile phone to function as a wireless hotspot, which supportsconnecting several laptop computers or other wireless devices to themobile phone, which in turn provides data services via the mobile datanetwork. As time marches on, the amount of data served on mobile datanetworks will continue to rise exponentially.

Mobile data networks include very expensive hardware and software, soupgrading the capability of existing networks is not an easy thing todo. It is not economically feasible for a mobile network provider tosimply replace all older equipment with new equipment due to the expenseof replacing the equipment. For example, the next generation wirelessnetwork in the United States is the 4G network. Many mobile data networkproviders are still struggling to get their entire system upgraded toprovide 3G data services. Immediately upgrading to 4G equipment is notan economically viable option for most mobile data network providers. Inmany locations, portions of the mobile data network are connectedtogether by point to point microwave links. These microwave links havelimited bandwidth. To significantly boost the throughput of this linksrequires the microwave links to be replaced with fiber optic cable butthis option is very costly.

BRIEF SUMMARY

Mobile network services are performed in a mobile data network in a waythat is transparent to most of the existing equipment in the mobile datanetwork. The mobile data network includes a radio access network and acore network. A breakout component in the radio access network breaksout data coming from a basestation, and performs one or more mobilenetwork services at the edge of the mobile data network based on thebroken out data. The breakout component includes a service interfacethat performs primary control by one system, and backup control by adifferent system.

The foregoing and other features and advantages will be apparent fromthe following more particular description, as illustrated in theaccompanying drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

The disclosure will be described in conjunction with the appendeddrawings, where like designations denote like elements, and:

FIG. 1 is a block diagram of a prior art mobile data network;

FIG. 2 is a block diagram of a mobile data network that includes first,second and third service mechanisms that all communicate via an overlaynetwork;

FIG. 3 is a block diagram of one possible implementation for parts ofthe mobile data network shown in FIG. 2 to illustrate the overlaynetwork;

FIG. 4 is a block diagram of the MIOP@NodeB shown in FIG. 2, whichincludes a first service mechanism;

FIG. 5 is a block diagram of the MIOP@RNC shown in FIG. 2, whichincludes a second service mechanism;

FIG. 6 is a block diagram of the MIOP@Core shown in FIG. 2, whichincludes a third service mechanism;

FIG. 7 is a block diagram of a management mechanism coupled to theoverlay network that manages the functions of MIOP@NodeB, MIOP@RNC, andMIOP@Core;

FIG. 8 is a flow diagram of a method performed by MIOP@NodeB shown inFIGS. 2 and 4;

FIG. 9 is a block diagram showing breakout criteria MIOP@RNC may use inmaking a decision of whether or not to break out data;

FIG. 10 is a flow diagram of a method for the MIOP@NodeB and MIOP@RNC todetermine when to break out data;

FIG. 11 is a flow diagram of a method for the first service mechanism inMIOP@NodeB to selectively break out data when break out for a specifiedsubscriber session has been authorized;

FIG. 12 is a flow diagram of a method for determining when to run MIOPservices for a specified subscriber session;

FIGS. 13-15 are flow diagrams that each show communications between MIOPcomponents when MIOP services are running; and

FIG. 16 is a flow diagram of a method for managing and adjusting theMIOP components;

FIG. 17 is a block diagram of one specific implementation for MIOP@NodeBand MIOP@RNC;

FIGS. 18 and 19 show a flow diagram of a first method for the specificimplementation shown in FIG. 17;

FIG. 20 is a flow diagram of a second method for the specificimplementation shown in FIG. 17;

FIG. 21 is a flow diagram of a third method for the specificimplementation shown in FIG. 17;

FIG. 22 is a flow diagram of a method for the specific implementationshown in FIG. 17 to process a data request that results in a cache missat MIOP@NodeB;

FIG. 23 is a flow diagram of a method for the specific implementationshown in FIG. 17 to process a data request that results in a cache hitat MIOP@NodeB;

FIG. 24 is a block diagram of one specific hardware architecture forMIOP@NodeB;

FIG. 25 is a block diagram of the system controller shown in FIG. 24;

FIG. 26 is a block diagram of the service processor shown in FIG. 24;

FIG. 27 is a block diagram of the security subsystem shown in FIG. 24;

FIG. 28 is a block diagram of the telco breakout system shown in FIG.24;

FIG. 29 is a block diagram of the edge application mechanism 2530 shownin FIG. 25 that performs multiple services at the edge of a mobile datanetwork based on data broken out at the edge of the mobile data network;

FIG. 30 is a block diagram showing a prior art system with a serviceprocessor that performs defined functions in the system;

FIG. 31 is a block diagram of part of the breakout appliance thatprovides a service interface with primary functions on one system andbackup functions on a different system;

FIG. 32 is a flow diagram of a method for providing a service interfacewith layered control;

FIG. 33 is a flow diagram of a method for performing system functions;

FIG. 34 is a block diagram showing primary system fan control on onesystem and backup system fan control on a different system;

FIG. 35 is a block diagram showing primary fail-to-wire control on onesystem and backup fail-to-wire control on a different system;

FIG. 36 is a block diagram showing error reporting on one system anderror logging on a different system;

FIG. 37 is a block diagram showing system thermal monitoring control onone system and thermal sensor control on a different system; and

FIG. 38 is a block diagram showing the two layers of control for theservice interface in the breakout component.

DETAILED DESCRIPTION

The claims and disclosure herein provide mechanisms and methods for abreakout component in a mobile data network that breaks out data comingfrom a basestation, and performs one or more mobile network services atthe edge of the mobile data network based on the broken out data. Thebreakout component includes a service interface that performs primarycontrol by one system, and backup control by a different system.

Referring to FIG. 1, a prior art mobile data network 100 is shown.Mobile data network 100 is representative of known 3G networks. Themobile data network 100 preferably includes a radio access network(RAN), a core network, and an external network, as shown in FIG. 1. Theradio access network includes the tower 120, basestation 122 with itscorresponding NodeB 130, and a radio interface on a radio networkcontroller (RNC) 140. The core network includes a network interface onthe radio network controller 140, the serving node 150, gateway node 160and operator service network 170 (as part of the mobile data network).The external network includes any suitable network. One suitable examplefor an external network is the internet 180, as shown in the specificexample in FIG. 1.

In mobile data network 100, user equipment 110 communicates via radiowaves to a tower 120. User equipment 110 may include any device capableof connecting to a mobile data network, including a mobile phone, atablet computer, a mobile access card coupled to a laptop computer, etc.The tower 120 communicates via network connection to a basestation 122.Each basestation 122 includes a NodeB 130, which communicates with thetower 120 and the radio network controller 140. Note there is a fan-outthat is not represented in FIG. 1. Typically there are tens of thousandsof towers 120. Each tower 120 typically has a corresponding base station122 with a NodeB 130 that communicates with the tower. However, networkcommunications with the tens of thousands of base stations 130 areperformed by hundreds of radio network controllers 140. Thus, each radionetwork controller 140 can service many NodeBs 130 in basestations 122.There may also be other items in the network between the basestation 130and the radio network controller 140 that are not shown in FIG. 1, suchas concentrators (points of concentration) or RAN aggregators thatsupport communications with many basestations.

The radio network controller 140 communicates with the serving node 150.In a typical 3G network, the serving node 150 is an SGSN, which is shortfor Service GPRS Support Node, where GPRS stands for general packetradio service. The serving node 150 mediates access to network resourceson behalf of mobile subscribers and implements the packet schedulingpolicy between different classes of quality of service. It is alsoresponsible for establishing the Packet Data Protocol (PDP) context withthe gateway node 160 for a given subscriber session. The serving node150 is responsible for the delivery of data packets from and to thebasestations within its geographical service area. The tasks of theserving node 150 include packet routing and transfer, mobilitymanagement (attach/detach and location management), logical linkmanagement, and authentication and charging functions. The serving node150 stores location information and user profiles of all subscribersregistered with the serving node 150. Functions the serving node 150typically performs include GPRS tunneling protocol (GTP) tunneling ofpackets, performing mobility management as user equipment moves from onebasestation to the next, and billing user data.

In a typical 3G network, the gateway node 160 is a GGSN, which is shortfor gateway GPRS support node. The gateway node 160 is responsible forthe interworking between the core network and external networks. Fromthe viewpoint of the external networks 180, gateway node 160 is a routerto a sub-network, because the gateway node 160 “hides” the core networkinfrastructure from the external network. When the gateway node 160receives data from an external network (such as internet 180) addressedto a specific subscriber, it forwards the data to the serving node 150serving the subscriber. For inactive subscribers paging is initiated.The gateway node 160 also handles routing packets originated from theuser equipment 110 to the appropriate external network. As anchor pointthe gateway node 160 supports the mobility of the user equipment 110. Inessence, the gateway node 160 maintains routing necessary to tunnel thenetwork packets to the serving node 150 that services a particular userequipment 110.

The gateway node 160 converts the packets coming from the serving node150 into the appropriate packet data protocol (PDP) format (e.g., IP orX.25) and sends them out on the corresponding external network. In theother direction, PDP addresses of incoming data packets from theexternal network 180 are converted to the address of the subscriber'suser equipment 110. The readdressed packets are sent to the responsibleserving node 150. For this purpose, the gateway node 160 stores thecurrent serving node address of the subscriber and his or her profile.The gateway node 160 is responsible for IP address assignment and is thedefault router for the subscriber's user equipment 110. The gateway node160 also performs authentication, charging and subscriber policyfunctions. One example of a subscriber policy function is “fair use”bandwidth limiting and blocking of particular traffic types such as peerto peer traffic. Another example of a subscriber policy function isdegradation to a 2G service level for a prepaid subscriber when theprepaid balance is zero.

A next hop router located in the operator service network (OSN) 170receives messages from the gateway node 160, and routes the trafficeither to the operator service network 170 or via an internet serviceprovider (ISP) towards the internet 180. The operator service network170 typically includes business logic that determines how the subscribercan use the mobile data network 100. The business logic that providesservices to subscribers may be referred to as a “walled garden”, whichrefers to a closed or exclusive set of services provided forsubscribers, including a carrier's control over applications, contentand media on user equipment.

Devices using mobile data networks often need to access an externalnetwork, such as the internet 180. As shown in FIG. 1, when a subscriberenters a request for data from the internet, that request is passed fromthe user equipment 110 to tower 120, to NodeB 130 in basestation 122, toradio network controller 140, to serving node 150, to gateway node 160,to operator service network 170, and to internet 180. When the requesteddata is delivered, the data traverses the entire network from theinternet 180 to the user equipment 110. The capabilities of known mobiledata networks 100 are taxed by the ever-increasing volume of data beingexchanged between user equipment 110 and the internet 180 because alldata between the two have to traverse the entire network.

Some efforts have been made to offload internet traffic to reduce thebackhaul on the mobile data network. For example, some mobile datanetworks include a node called a HomeNodeB that is part of the radioaccess network. Many homes have access to high-speed Internet, such asDirect Subscriber Line (DSL), cable television, wireless, etc. Forexample, in a home with a DSL connection, the HomeNodeB takes advantageof the DSL connection by routing Internet traffic to and from the userequipment directly to the DSL connection, instead of routing theInternet traffic through the mobile data network. While this may be aneffective way to offload Internet traffic to reduce backhaul, theHomeNodeB architecture makes it difficult to provide many mobile networkservices such as lawful interception, mobility, and chargingconsistently with the 3G or 4G mobile data network.

Referring to FIG. 2, a mobile data network 200 includes mechanisms thatprovide various services for the mobile data network in a way that istransparent to most of the existing equipment in the mobile datanetwork. FIG. 2 shows user equipment 110, tower 120, NodeB 130, radionetwork controller 140, serving node 150, gateway node 160, operatorservice node 170, and internet 180, the same as shown in FIG. 1. Theadditions to the mobile data network 200 when compared with the priorart mobile data network 100 in FIG. 1 include the addition of threecomponents that may provide mobile network services in the mobile datanetwork, along with a network management mechanism to manage the threecomponents. The mobile network services are performed by what is calledherein a Mobile Internet Optimization Platform (MIOP), and the mobilenetwork services performed by the Mobile Internet Optimization Platformare referred to herein as MIOP services. The three MIOP components thatprovide these mobile network services are shown in FIG. 2 as MIOP@NodeB210, MIOP@RNC 220 and MIOP@Core 230. A network management system shownas MIOP@NMS 240 manages the overall solution by: 1) managing thefunction of the three MIOP components 210, 220 and 230; 2) determiningwhich MIOP@NodeBs in the system aggregate to which MIOP@RNCs via theoverlay network for performance, fault and configuration management; and3) monitoring performance of the MIOP@NodeBs to dynamically change andconfigure the mobile network services. The MIOP@NodeB 210, MIOP@RNC 220,MIOP@Core 230, MIOP@NMS 240, and the overlay network 250, and any subsetof these, and are referred to herein as MIOP components.

The mobile network services provided by MIOP@NodeB 210, MIOP@RNC 220,and MIOP@Core 230 include any suitable services on the mobile datanetwork, such as data optimizations, RAN-aware services,subscriber-aware services, edge-based application serving, edge-basedanalytics, etc. All mobile network services performed by all ofMIOP@NodeB 210, MIOP@RNC 220, and MIOP@Core 230 are included in the termMIOP services as used herein. In addition to the services being offer inthe MIOP components MIOP@NodeB 210, MIOP@RNC 220, and MIOP@Core 230, thevarious MIOP services could also be provided in a cloud based manner.

MIOP@NodeB 210 includes a first service mechanism and is referred to asthe “edge” based portion of the MIOP solution. MIOP@NodeB 210 resides inthe radio access network and has the ability to intercept all traffic toand from the NodeB 130. MIOP@NodeB 210 preferably resides in the basestation 222 shown by the dotted box in FIG. 2. Thus, all data to andfrom the NodeB 130 to and from the radio network controller 140 isrouted through MIOP@NodeB 210. MIOP@NodeB performs what is referred toherein as breakout of data on the intercepted data stream. MIOP@NodeBmonitors the signaling traffic between NodeB and RNC and on connectionsetup intercepts in particular the setup of the transport layer(allocation of the UDP Port, IP address or AAL2 channel). For registeredsessions the breakout mechanism 410 will be configured in a way that alltraffic belonging to this UDP Port, IP address to AAL2 channel will beforwarded to an data offload function. MIOP@NodeB 210 thus performsbreakout of data by defining a previously-existing path in the radioaccess network for non-broken out data, by defining a new second datapath that did not previously exist in the radio access network forbroken out data, identifying data received from a corresponding NodeB asdata to be broken out, sending the data to be broken out on the seconddata path, and forwarding other data that is not broken out on the firstdata path. The signaling received by MIOP@NodeB 210 from NodeB 130 isforwarded to RNC 140 on the existing network connection to RNC 140, eventhough the data traffic is broken out. Thus, RNC 140 sees the signalingtraffic and knows the subscriber session is active, but does not see theuser data that is broken out by MIOP@NodeB 210. MIOP@NodeB thus performstwo distinct functions depending on the monitored data packets: 1)forward the data packets to RNC 140 for signaling traffic and user datathat is not broken out (including voice calls); and 2) re-route the datapackets for user data that is broken out.

Once MIOP@NodeB 210 breaks out user data it can perform any suitableservice based on the traffic type of the broken out data. Because theservices performed by MIOP@NodeB 210 are performed in the radio accessnetwork (e.g., at the basestation 222), the MIOP@NodeB 210 can servicethe user equipment 110 much more quickly than can the radio networkcontroller 140. In addition, by having a MIOP@NodeB 210 that isdedicated to a particular NodeB 130, one MIOP@NodeB only needs toservice those subscribers that are currently connected via a singleNodeB. The radio network controller, in contrast, which typicallyservices dozens or even hundreds of basestations, must service all thesubscribers accessing all basestations it controls from a remotelocation. As a result, MIOP@NodeB is in a much better position toprovide services that will improve the quality of service and experiencefor subscribers than is the radio network controller.

Breaking out data in the radio access network by MIOP@NodeB 210 allowsfor many different types of services to be performed in the radio accessnetwork. These services may include optimizations that are similar tooptimizations provided by known industry solutions between radio networkcontrollers and the serving node. However, moving these optimizations tothe edge of the mobile data network will not only greatly improve thequality of service for subscribers, but will also provide a foundationfor applying new types of services at the edge of the mobile datanetwork, such as terminating machine-to-machine (MTM) traffic at theedge (e.g., in the basestation), hosting applications at the edge, andperforming analytics at the edge.

MIOP@RNC 220 includes a second service mechanism in mobile data network200. MIOP@RNC 220 monitors all communication between the radio networkcontroller 140 and serving node 150. The monitored communications areall communications to and from the radio network controller and the restof the core network. MIOP@RNC 220 may provide one or more services forthe mobile data network. MIOP@RNC 220 preferably makes the decision ofwhether or not to allow breakout of data. If MIOP@RNC 220 decides tobreakout data for a given subscriber session, it may send a message toMIOP@NodeB 210 authorizing breakout by MIOP@NodeB 210, or may decide tobreakout the data at MIOP@RNC 220, depending on the configured breakoutdecision criteria and selected radio channel. Because messages to andfrom the core network establishing the PDP context for a givensubscriber session are monitored by MIOP@RNC 220, the decision ofwhether or not to breakout data resides in the MIOP@RNC 220.

MIOP@Core 230 includes a third service mechanism in the mobile datanetwork 200. MIOP@Core 230 may include all the same services as MIOP@RNC220, or any suitable subset of those services. If the decision is madenot to provide services at MIOP@NodeB 210 or MIOP@RNC 220, these sameservices plus more sophisticated services can be performed at MIOP@Core230. Thus, mobile data network 200 provides flexibility by allowing adecision to be made of where to perform which services. BecauseMIOP@NodeB 210, MIOP@RNC 220 and MIOP@Core 230 preferably include someof the same services, the services between components may interact(e.g., MIOP@NodeB and MIOP@Core may interact to optimize TCP trafficbetween them), or the services may be distributed across the mobile datanetwork (e.g., MIOP@NodeB performs breakout and provides services forhigh-speed traffic, MIOP@RNC performs breakout and provides services forlow-speed traffic, and MIOP@Core provides services for non-broken outtraffic). The MIOP system architecture thus provides a very powerful andflexible solution, allowing dynamic configuring and reconfiguring on thefly of which services are performed by the MIOP components and where. Inaddition, these services may be implemented taking advantage of existinginfrastructure in a mobile data network.

MIOP@NMS 240 is a network management system that monitors and controlsthe functions of MIOP@NodeB 210, MIOP@RNC 220, and MIOP@Core 230.MIOP@NMS 240 preferably includes MIOP internal real-time or nearreal-time performance data monitoring to determine if historical oradditional regional dynamic changes are needed to improve services onthe mobile data network 200. MIOP@NMS 240 provides a user interface thatallows a system administrator to operate and to configure how the MIOPcomponents 210, 220 and 230 function.

The overlay network 250 allows MIOP@NodeB 210, MIOP@RNC 220, MIOP@Core230, and MIOP@NMS 240 to communicate with each other. The overlaynetwork 250 is preferably a virtual private network primarily on anexisting physical network in the mobile data network. Thus, whileoverlay network 250 is shown in FIG. 2 separate from other physicalnetwork connections, this representation in FIG. 2 is a logicalrepresentation.

FIG. 3 shows one suitable implementation of a physical network and theoverlay network in a sample mobile data system. The existing physicalnetwork in the mobile data network before the addition of the MIOP@NodeB210, MIOP@RNC 220, and MIOP@Core 230 is shown by the solid lines witharrows. This specific example in FIG. 3 includes many NodeBs, shown inFIG. 1 as 130A, 130B, 130C, . . . , 130N. Some of the NodeBs have acorresponding MIOP@NodeB. FIG. 3 illustrates that MIOP@NodeBs (such as210A and 210N) can be placed in a basestation with its correspondingNodeB, or can be placed upstream in the network after a point ofconcentration (such as 210A after POC3 310). FIG. 3 also illustratesthat a single MIOP@NodeB such as MIOP@NodeB1 210A can service twodifferent NodeBs, such as NodeB1 130A and NodeB2 130B. Part of theoverlay network is shown by the dotted lines between MIOP@NodeB1 210Aand second point of concentration POC2 320, between MIOP@NodeB3 210C andPOC3 315, between MIOP@NodeBN 210N and POC3 315, and between POC3 315and POC2 320. Note the overlay network in the radio access networkportion is a virtual private network that is implemented on the existingphysical network connections. The overlay network allows the MIOP@NodeBs210A, 210C and 210N to communicate with each other directly, which makessome services possible in the mobile data network 200 that werepreviously impossible. FIG. 3 shows MIOP@NodeB1 210A connected to asecond point of concentration POC2 320. The broken arrows coming in fromabove at POC2 320 represent connections to other NodeBs, and could alsoinclude connections to other MIOP@NodeBs. Similarly, POC2 320 isconnected to a third point of concentration POC1 330, with possiblyother NodeBs or MIOP@NodeBs connected to POC1. The RNC 140 is shownconnected to POC1 330, and to a first router RT1 340 in the corenetwork. The router RT1 340 is also connected to the SGSN 150. While notshown in FIG. 3 for the sake of simplicity, it is understood that SGSNin FIG. 3 is also connected to the upstream core components shown inFIG. 2, including GGSN 160, OSN 170 and internet 180.

As shown in FIG. 3, the overlay network from the NodeBs to POC1 330 is avirtual private network implemented on existing physical networkconnections. However, the overlay network requires a second router RT2350, which is connected via a physical network connection 360 to POC1330, and is connected via physical network connection 370 to MIOP@RNC220. This second router RT2 350 may be a separate router, or may be arouter implemented within MIOP@RNC 220. MIOP@RNC 220 is also connectedto router RT1 340 via a physical network connection 380, and is alsoconnected to MIOP@Core 230. Physical connection 380 in FIG. 3 is shownin a line with short dots because it is not part of the pre-existingphysical network before adding the MIOP components (arrows with solidlines) and is not part of the overlay network (arrows with long dots).Note the connection from MIOP@RNC 220 to MIOP@Core 230 is via existingphysical networks in the core network.

We can see from the configuration of the physical network and overlaynetwork in FIG. 3 that minimal changes are needed to the existing mobiledata network to install the MIOP components. The most that must be addedis one new router 350 and three new physical network connections 360,370 and 380. Once the new router 350 and new physical networkconnections 360, 370 and 380 are installed, the router 350 and MIOPcomponents are appropriately configured, and the existing equipment inthe mobile data network is configured to support the overlay network,the operation of the MIOP components is completely transparent toexisting network equipment.

As can be seen in FIG. 3, data on the overlay network is defined onexisting physical networks from the NodeBs to POC1. From POC1 theoverlay network is on connection 360 to RT2 350, and on connection 370to MIOP@RNC 220. Thus, when MIOP@NodeB 210 in FIG. 2 needs to send amessage to MIOP@RNC 220, the message is sent by sending packets via avirtual private network on the physical network connections to POC1,then to RT2 350, then to MIOP@RNC 220. Virtual private networks arewell-known in the art, so they are not discussed in more detail here.

Referring to FIG. 4, MIOP@NodeB 210 preferably includes a breakoutmechanism 410, an edge service mechanism 430, and an overlay networkmechanism 440. The breakout mechanism 410 determines breakoutpreconditions 420 that, when satisfied, allow breakout to occur at thisedge location. Breakout mechanism 410 in MIOP@NodeB 210 communicateswith the breakout mechanism 510 in MIOP@RNC 220 shown in FIG. 5 to reacha breakout decision. The breakout mechanism 410, after receiving amessage from MIOP@RNC 220 authorizing breakout on connection setupintercepts in particular the setup of the transport layer (allocation ofthe UDP Port, IP address or AAL2 channel). For authorized sessions thebreakout mechanism 410 will be configured in a way that all trafficbelonging to this UDP Port, IP address to AAL2 channel will be forwardedto a data offload function. For traffic that should not be broken out,the breakout mechanism 410 sends the data on the original data path inthe radio access network. In essence, MIOP@NodeB 210 intercepts allcommunications to and from the basestation 130, and can perform services“at the edge”, meaning at the edge of the radio access network that isclose to the user equipment 110. By performing services at the edge, theservices to subscribers may be increased or optimizes without requiringhardware changes to existing equipment in the mobile data network.

The breakout mechanism 410 preferably includes breakout preconditions420 that specify one or more criterion that must be satisfied beforebreakout of data is allowed. One suitable example of breakoutpreconditions is the speed of the channel. In one possibleimplementation, only high-speed channels will be broken out atMIOP@NodeB 210. Thus, breakout preconditions 420 could specify thatsubscribers on high-speed channels may be broken out, while subscriberson low-speed channels are not broken out at MIOP@NodeB 210. When thebreakout preconditions 420 are satisfied, the MIOP@NodeB 210 registersthe subscriber session with MIOP@RNC 220. This is shown in method 800 inFIG. 8. MIOP@NodeB 210 intercepts and monitors network traffic to andfrom NodeB (basestation) (step 810). When the traffic does not satisfythe breakout preconditions (step 820=NO), method 800 returns to step810. When the traffic satisfies the breakout conditions (step 820=YES),MIOP@NodeB 210 sends a message to MIOP@RNC 220 on the overlay network250 to register the subscriber session for breakout (step 830). With thesubscriber session registered with MIOP@RNC 220, the MIOP@RNC 220 willdetermine whether or not to breakout data for the subscriber session,and where the breakout is done, as explained in more detail below.

Referring back to FIG. 4, MIOP@NodeB 210 also includes an edge servicemechanism 430. The edge service mechanism 430 provides one or moreservices for the mobile data network 200. The edge service mechanism 430may include any suitable service for the mobile data network includingwithout limitation caching of data, data or video compressiontechniques, push-based services, charging, application serving,analytics, security, data filtering, new revenue-producing services,etc. The edge service mechanism is the first of three service mechanismsin the MIOP components. While the breakout mechanism 410 and edgeservice mechanism 430 are shown as separate entities in FIG. 4, thefirst service mechanism could include both breakout mechanism 410 andedge service mechanism 430.

MIOP@NodeB 210 also includes an overlay network mechanism 440. Theoverlay network mechanism 440 provides a connection to the overlaynetwork 250 in FIG. 2, thereby allowing MIOP@NodeB 210 to communicatewith MIOP@RNC 220, MIOP@Core 230, and MIOP@NMS 240. As stated above, theoverlay network 250 is preferably a virtual private network primarily onan existing physical network in the mobile data network 200.

Referring to FIG. 5, MIOP@RNC 220 preferably includes a breakoutmechanism 510, an RNC service mechanism 540, an overlay networkmechanism 550, and business intelligence 560. Breakout mechanism 510includes breakout criteria 520 that specifies one or more criterionthat, when satisfied, allows breakout of data. Subscriber registrationmechanism 530 receives messages from MIOP@NodeB 210, and registerssubscriber sessions for which the breakout preconditions 420 inMIOP@NodeB 210 are satisfied. When the breakout mechanism 510 determinesthe breakout criteria 520 is satisfied, the breakout mechanism 510 willthen determine where the breakout should occur. When the breakout canoccur at MIOP@NodeB 210, the MIOP@RNC 220 sends a message to MIOP@NodeB210 on the overlay network 250 authorizing breakout at MIOP@NodeB 210.When the breakout should occur at MIOP@RNC 220, the breakout mechanism510 in MIOP@RNC 220 performs the breakout as well for the trafficremaining then). This is shown in more detail in method 1000 in FIG. 10.MIOP@RNC monitors network traffic between the radio network controller140 and the serving node 150 (step 1010). When the traffic does notsatisfy the breakout criteria (step 1020=NO), method 1000 loops back tostep 1010. When the network traffic satisfies the breakout criteria(step 1020=YES), the breakout mechanism 510 determines whether thesubscriber session is registered for breakout (step 1030). A subscribersession is registered for breakout when the MIOP@NodeB 210 determinedthe traffic satisfied the breakout preconditions and registered thesubscriber session for breakout, as shown in FIG. 8. Returning to FIG.10, when the subscriber is registered for breakout (step 1030=YES),MIOP@RNC 220 sends a message via the overlay network 250 to MIOP@NodeB210 authorizing breakout of traffic for the subscriber session (step1040). MIOP@NodeB 210 may then breakout traffic for the subscribersession (step 1050). When the subscriber is not registered for breakout(step 1030=NO), method 1000 checks to see if MIOP@RNC is going to dobreakout (step 1060). If not (step 1060=NO), method 1000 is done. WhenMIOP@RNC is going to do breakout (step 1060=YES), the traffic is thenbroken out at MIOP@RNC (step 1070).

In one specific example, the breakout preconditions specify onlyhigh-speed channels are broken out at MIOP@NodeB 210, and when thebreakout preconditions are satisfied, the subscriber session isregistered for breakout, as shown in FIG. 8. FIG. 10 illustrates thateven when the breakout preconditions are not satisfied, breakout canstill be performed at MIOP@RNC 220. Thus, even if the subscriber sessionis on a low-speed channel, if all the other breakout criteria aresatisfied, breakout of the low-speed channel may be performed atMIOP@RNC 220. The mobile data network 200 thus provides greatflexibility in determining when to do breakout and where.

Referring back to FIG. 5, the RNC service mechanism 540 provides one ormore services for the mobile data network. RNC service mechanism 540 isthe second of three service mechanisms in the MIOP components. The RNCservice mechanism 540 may include any suitable service for the mobiledata network, including without limitation caching of data, data orvideo compression techniques, push-based services, charging, applicationserving, analytics, security, data filtering, new revenue-producingservices, etc.

While the breakout mechanism 510 and RNC service mechanism 540 are shownas separate entities in FIG. 5, the second service mechanism couldinclude both breakout mechanism 510 and RNC service mechanism 540. Theoverlay network mechanism 550 is similar to the overlay networkmechanism 440 in FIG. 4, providing a logical network connection to theother MIOP components on the overlay network 250 in FIG. 2. MIOP@RNC 220also includes business intelligence 560, which includes:

-   -   1) historical subscriber information received from the mobile        data network over time, such as mobility and location, volumes,        traffic types, equipment used, etc.    -   2) network awareness, including NodeB load states, service area        code, channel type, number of times channel type switching        occurred for a PDP session, serving cell ID, how many cells and        their IDs are in the active set, PDP context type, PDP sessions        per subscriber, session duration, data consumption, list of        Uniform Resource Locators (URLs) browsed for user        classification, top URL browsed, first time or repeat user,        entry point/referral URLs for a given site, session tracking,        etc.    -   3) association of flow control procedures between NodeB and RNC        to subscribers.

The business intelligence 560 may be instrumented by the RNC servicemechanism 540 to determine when and what types of MIOP services toperform for a given subscriber. For example, services for a subscriberon a mobile phone may differ when compared to services for a subscriberusing a laptop computer to access the mobile data network. In anotherexample, voice over internet protocol (VOIP) session could have the databroken out.

Referring to FIG. 6, the MIOP@Core 230 includes a core service mechanism610 and an overlay network mechanism 620. Core service mechanism 610provides one or more services for the mobile data network. Core servicemechanism 610 is the third of three service mechanisms in the MIOPcomponents. The core service mechanism 610 may include any suitableservice for the mobile data network, including without limitationcaching of data, data or video compression techniques, push-basedservices, charging, application serving, analytics, security, datafiltering, new revenue-producing services, etc. In one specificimplementation, the MIOP@Core 230 is an optional component, because allneeded services could be performed at MIOP@NodeB 210 and MIOP@RNC 220.In an alternative implementation, MIOP@Core 230 performs some services,while MIOP@RNC performs others or none. The overlay network mechanism620 is similar to the overlay network mechanisms 440 in FIG. 4 and 550in FIG. 5, providing a logical network connection to the other MIOPcomponents on the overlay network 250 in FIG. 2.

Referring to FIG. 7, the MIOP@NMS 240 is a network management systemthat monitors and manages performance of the mobile data network 200,and controls the function of MIOP@NodeB 210, MIOP@RNC 220, and MIOP@Core230. MIOP@NMS 240 preferably includes a network monitoring mechanism710, a performance management mechanism 720, a security managementmechanism 730, and a configuration management mechanism 740. The networkmonitoring mechanism 710 monitors network conditions, such as alarms, inthe mobile data network 200. The performance management mechanism 720can enable, disable or refine certain services by supporting theexecution of services in real-time or near real-time, such as servicesthat gather information to assess customer satisfaction. The securitymanagement mechanism 730 manages security issues in the mobile datanetwork, such as intrusion detection or additional data privacy. Theconfiguration management mechanism 740 controls and manages theconfiguration of MIOP@NodeB 210, MIOP@RNC 220, and MIOP@Core 230 in away that allows them to dynamically adapt to any suitable criteria,including data received from the network monitoring mechanism, time ofday, information received from business intelligence 560, etc.

FIG. 9 shows sample breakout criteria 520 shown in FIG. 5 and used instep 1020 in FIG. 10. Suitable breakout criteria 520 includes accesspoint name, user equipment identifier, user equipment type, quality ofservice, subscriber ID, mobile country code, and mobile network code.For example, breakout criteria 520 could specify to perform MIOPservices for the operator's subscribers, and not to perform MIOPservices for roamers. In another example, the breakout criteria 520could specify to break out only video requests. A static breakoutdecision will be performed during PDP Context Activation. Based on IPflows (e.g. shallow packet inspection of the IP 5 tuple) only specificIP flows maybe identified and broken out dynamically within that PDPsubscriber session (e.g., VOIP traffic), as discussed in more detailbelow with respect to FIG. 11. Breakout criteria 520 expressly extendsto any suitable criteria for making the breakout decision.

Referring again to FIG. 10, when the traffic satisfies the breakoutcriteria (step 1020=YES), and the subscriber session is registered forbreakout (step 1030=YES), MIOP@RNC sends a message to MIOP@NodeBauthorizing breakout of traffic for this subscriber session (step 1040).In response, MIOP@NodeB begins decrypting the bearer, examining thesignaling and user IP traffic tunneled through it and may breakout thetraffic for this subscriber session (step 1050). Note, however,MIOP@NodeB may still decide not to breakout all traffic based on othercriteria, such as type of IP request the destination of the traffic orthe ISO Layer 7 Application of the decrypted user traffic. Determinationof the Application may be performed simply by inspection of the IP5-tuple or optionally via inspection at layer 7 using Deep PacketInspection (DPI) techniques. This is shown in the specific example inFIG. 11. Method 1050 in FIG. 10 is one suitable implementation of step1050 in FIG. 10. MIOP@NodeB monitors IP requests from the subscriber(step 1110). When the user traffic IP request matches a specified typecriteria (step 1120=YES), the IP session is broken out for thesubscriber (step 1130). When the IP request does not match a specifiedcriteria type (step 1120=NO), no breakout is performed. For example,let's assume that IP requests to access video over the RTP layer 7Application Protocol are broken out so the video data may be cached inMIOP@NodeB 210, but other requests, such as Google searches, are not.The MIOP@NodeB monitors the IP requests from the subscriber (step 1110),and when the subscriber session IP request carries RTP traffic is for avideo file (step 1120=YES), the IP session is broken out (step 1130).Otherwise, the IP session is not broken out at MIOP@NodeB. This is onesimple example to illustrate additional flexibility and intelligencewithin MIOP@NodeB that may determine whether or not to perform breakoutfor a given subscriber session at the MIOP@NodeB after being authorizedby MIOP@RNC to perform breakout for that subscriber session. Anysuitable criteria could be used to determine what to breakout and whenat MIOP@NodeB once MIOP@NodeB has been authorized for breakout in step1040 in FIG. 10.

Referring to FIG. 12, method 1200 shows a method for determining when torun MIOP services. The Packet Data Protocol (PDP) activation context fora subscriber is monitored (step 1210). A PDP activation context isestablished when user equipment 110 connects to tower 120 and thesubscriber runs an application that triggers the PDP activationprocedure. The core network will determine the subscriber, and perhapscorresponding user equipment. When MIOP services are allowed (step1220=YES), services for this subscriber session are run (step 1230) uponthe arrival of data from the subscriber. When MIOP services are notallowed (step 1220=NO), no MIOP services are run. In one simple example,MIOP services in the mobile data network are allowed for authorizedsubscribers, but are not allowed for subscribers from a differentwireless company that are roaming.

MIOP services may require communicating between MIOP components on theoverlay network. Referring to FIG. 13, a method 1300 showscommunications by MIOP@NodeB when MIOP services are running (step 1310).When the edge service mechanism requires communication with MIOP@RNC(step 1320=YES), MIOP@NodeB exchanges messages with MIOP@RNC over theoverlay network (step 1330). When the edge service mechanism requirescommunication with MIOP@Core (step 1340=YES), MIOP@NodeB exchangesmessages with MIOP@Core over the overlay network (step 1350). Theoverlay network thus allows the various MIOP components to communicatewith each other when MIOP services are running

FIG. 14 shows a method 1400 that shows communications by MIOP@RNC whenMIOP services are running (step 1410). When the RNC service mechanismrequires communication with MIOP@NodeB (step 1420=YES), MIOP@RNCexchanges messages with MIOP@NodeB over the overlay network (step 1430).When the RNC service mechanism requires communication with MIOP@Core(step 1440=YES), MIOP@RNC exchanges messages with MIOP@Core over theoverlay network (step 1450).

FIG. 15 shows a method 1500 that shows communications by MIOP@Core whenMIOP services are running (step 1510). When the core service mechanismrequires communication with MIOP@NodeB (step 1520=YES), MIOP@Coreexchanges messages with MIOP@NodeB over the overlay network (step 1530)relayed via MIOP@RNC. When the core service mechanism requirescommunication with MIOP@RNC (step 1540=YES), MIOP@Core exchangesmessages with MIOP@RNC over the overlay network (step 1550).

FIG. 16 shows a method 1600 that is preferably performed by MIOP@NMS 240in FIGS. 2 and 7. The performance and efficiency of the MIOP componentsthat perform MIOP services are monitored (step 1610). The MIOPcomponents that perform MIOP services may include MIOP@NodeB 210,MIOP@RNC 220, and MIOP@Core 230, assuming all of these components arepresent in the mobile data network 200. When performance may be improved(step 1620=YES), the performance of the MIOP components is adjusted (ifimplemented and applicable) by sending one or more network messages viathe overlay network (step 1630). Note also a human operator could alsomanually reconfigure the MIOP components to be more efficient.

Referring to FIG. 17, implementations for MIOP@NodeB 210 and MIOP@RNC220 are shown by way of example. Other implementations are possiblewithin the scope of the disclosure and claims herein. User equipment 110is connected to NodeB 130. Note the antenna 120 shown in FIG. 2 is notshown in FIG. 17, but is understood to be present to enable thecommunication between user equipment 110 and NodeB 130. MIOP@NodeB 210includes an edge cache mechanism 1730, which is one suitable example ofedge service mechanism 430 in FIG. 4. MIOP@NodeB 210 includes aninterface referred to herein as IuB Data Offload Gateway (IuB DOGW)1710. This gateway 1710 implements the breakout mechanism 410 accordingto one or more specified breakout preconditions 420 shown in FIG. 4. IuBDOGW 1710 includes a switching application 1740, an offload data handler1750, and an RNC channel handler 1760. The switching application 1740 isresponsible for monitoring data packets received from NodeB 130,forwarding the broken out data packets to the offload data handleraccording to its configuration, and relaying the non-broken out datapackets and control system flows to the RNC 140 via the originalconnections in the RAN. While switching application 1740 is shown as twoseparate boxes in FIG. 17, this is done to visually indicate theswitching application 1740 performs switching on two differentinterfaces, the network interface and overlay network interface, but theswitching application 1740 is preferably a single entity.

When a breakout decision is made and MIOP@RNC 220 sends a message toMIOP@NodeB 210 authorizing breakout (see step 1040 in FIG. 10), whenMIOP@NodeB decides to breakout specified user data, the specified userdata received by the switching application 1740 from NodeB 130 is brokenout, which means the switching application 1740 routes the specifieduser data to the offload data handler 1750 so the broken out data isrouted to the data path defined for breakout data. The offload datahandler 1750 may send the data to the edge cache mechanism 1730 forprocessing, which can route the data directly to MIOP@RNC 220 via theoverlay network, as shown by the path with arrows going from NodeB 130to MIOP@RNC 220.

User data that is not broken out and signaling traffic is routeddirectly back by the switching application 1740 to RNC. In this manner,non-broken out data and signaling traffic passes through the IuB DOGW1710 to RNC 140, while broken out data is routed by the IuB DOGW 1710 toa different destination. Note that edge cache mechanism 1730 may sendmessages to MIOP@RNC 220 as shown in FIG. 17, but the broken outmessages themselves are not sent to MIOP@RNC 220.

MIOP@RNC 220 includes an interface referred to herein as IuPS dataoffload gateway (IuPS DOGW) 1770. IuPS DOGW 1770 forwards all signalingand non-broken out data traffic from RNC 140 to SGSN 150 via the GTPtunnel. IuPS DOGW 1770 includes the breakout mechanism 510, breakoutcriteria 520 and subscriber registration mechanism 530 shown in FIG. 5and discussed above with reference to FIG. 5. IuPS DOGW 1770 mayexchange messages with IuB DOGW 1710 via the overlay network to performany needed service in MIOP@NodeB 210 or MIOP@RNC 220. For the specificimplementation shown in FIG. 17, while the IuPS DOGW 1770 in MIOP@RNC220 does not include an offload data handler, the IuPS DOGW 1770 couldinclude an offload data handler and switching application similar tothose shown in MIOP@NodeB 210 when MIOP@RNC 220 also needs to performbreakout of data.

The IuPS DOGW 1770 includes an RNC channel handler 1780. The RNC channelhandlers 1760 in MIOP@NodeB 210 and 1780 in MIOP@RNC 220 monitor datatraffic to and from RNC 140 related to a broken out subscriber sessionand provide a keep-alive channel maintenance mechanism.

Specific methods are shown in FIGS. 18-21 that illustrate how thespecific implementation in FIG. 17 could be used. FIGS. 18 and 19 show amethod 1800 for setting up breakout of data. The UE sends a connectionrequest to the RNC (step 1810). The RNC sets up a radio link via NodeB(step 1815). The RNC then sets up a network connection with NodeB (step1820). The UE and SGSN then communicate for the attach andauthentication procedure (step 1825). IuB DOGW detects the leadingmessage in the attach and authentication procedure, and registers thesubscriber session with IuPS DOGW when preconditions are fulfilled (e.g.UE is capable to carry high speed traffic) (step 1830). During theattach and authentication procedure, IuPS DOGW monitors the securitycontext sent from SGSN to RNC (step 1835). IuPS DOGW then sends keys toIuB DOGW (step 1840). These keys are needed to decipher (decrypt) theupcoming signaling and uplink user data and to cipher (encrypt) thedownlink user data. UE then requests PDP context activation to SGSN(step 1845). In response, SGSN sets up a network tunnel to RNC (step1850). IuPS DOGW monitors network tunnel setup from SGSN to RNC andmakes a decision breakout=YES (step 1855). IuPS DOGW sends a message toIuB DOGW indicating breakout=YES (step 1860). Continuing on FIG. 19,SGSN sends an RAB assignment request to UE (step 1865). IuPS DOGWdetects the RAB assignment request from SGSN to UE and replaces the SGSNtransport address with IuPS DOGW transport address (step 1870). IuPSDOGW sends a message to MIOP@Core indicating breakout=YES (step 1875).RNC communicates with NodeB and UE to (re) configure signaling and dataradio bearer (step 1880). RNC acknowledges to SGSN when RAB assignmentis complete (step 1885). SGSN accepts PDP context activation by sendinga message to UE (step 1890). UE and SGSN may then exchange data for thePDP context (step 1895).

Referring to FIG. 20, a method 2000 begins by establishing a PDP context(step 2010). Method 1800 in FIGS. 18 and 19 include the detailed stepsfor establishing a PDP context. When breakout=YES, RAB assignmentrequests from SGSN to RNC are monitored by IuPS DOGW (step 2020). IuPSDOGW modifies any RAB assignment requests from SGSN to RNC to replacethe SGSN transport address in the RAB assignment request with the IuPSDOGW transport address (step 2030) in case of matching breakout criteriaduring PDP context activation procedure. The switching application onIuB DOGW is configured upon the RAN transport layer setup to identifybased on IP addresses and ports the broken out traffic and forwards thistraffic to the Offload data handler 1765, and forwards non-broken outtraffic and control system data flows to the RNC (step 2040).

Referring to FIG. 21, a method 2100 begins when NodeB sends data towardsRNC (step 2110). The switching application in IuB DOGW redirects thebroken out traffic to the edge service mechanism (step 2120), such asedge cache mechanism 1730 in FIG. 17. The switching application alsoforwards non-broken out data and signaling data to the RNC (step 2130)via the original RAN connections. The RNC can still receive data fornon-broken out traffic from MIOP@NodeB when breakout=YES (step 2140).The RNC then sends non-broken out traffic from MIOP@NodeB from UE whenbreakout=YES to IuPS DOGW transport address specified in RAB assignmentrequest (step 2150).

A simple example is now provided for the specific implementation in FIG.17 to show how data can be cached and delivered by MIOP@NodeB 210.Referring to FIG. 22, method 2200 represents steps performed in theimplementation in FIG. 17 for a cache miss. UE sends a data request toNodeB (step 2210). NodeB sends the data request to IuB DOGW (step 2215).We assume the requested data meets the offload criteria at MIOP@NodeB(step 2220), which means MIOP@NodeB has been authorized to performbreakout and has determined this requested data should be broken out.IuB DOGW sends the data request to the edge cache mechanism (step 2225).We assume the data is not present in the edge cache mechanism, so due tothe cache miss, the edge cache mechanism sends the data request back toIuB DOGW (step 2230). IuB DOGW then forwards the data request toMIOP@RNC via the overlay network (step 2235). In the worst case thecontent is not cached on MIOP@RNC or MIOP@Core, MIOP@RNC routes the datarequest to via the overlay network to the MIOP@Core, which passes thedata request up the line to the internet, which delivers the requesteddata to MIOP@Core, which delivers the requested data via the overlaynetwork to MIOP@RNC (step 2240). IuPS DOGW then sends the requested datato IuB DOGW (step 2245). IuB DOGW then sends the requested data to theedge cache mechanism (step 2250). The edge cache mechanism caches therequested data (step 2255). The edge cache mechanism sends the requesteddata to IuB DOGW (step 2260). The offload data handler in IuB DOGW sendsthe requested data to NodeB (step 2265). NodeB then sends the requesteddata to UE (step 2270). At this point, method 2200 is done.

Method 2300 in FIG. 23 shows the steps performed for a cache hit in thespecific implementation in FIG. 17. The UE sends the data request toNodeB (step 2310). NodeB sends the data request to IuB DOGW (step 2320).The requested data meets the offload criteria at MIOP@NodeB (step 2330).IuB DOGW sends the data request to the edge cache mechanism (step 2340).Due to a cache hit, the edge cache mechanism sends the requested datafrom the cache to IuB DOGW (step 2350). The offload data handler in IuBDOGW sends the requested data to NodeB (step 2360). Node B then sendsthe requested data to UE (step 2370). Method 2300 shows a greatadvantage in caching data at MIOP@NodeB. With data cached at MIOP@NodeB,the data may be delivered to the user equipment without any backhaul onthe core network. The result is reduced network congestion in the corenetwork while improving quality of service to the subscriber.

The methods shown in FIGS. 18-23 provide detailed steps for the specificimplementation in FIG. 17. Other implementations may have detailed stepsthat are different than those shown in FIGS. 18-23. These are shown byway of example, and are not limiting of the disclosure and claimsherein.

The architecture of the MIOP system allows services to be layered ornested. For example, the MIOP system could determine to do breakout ofhigh-speed channels at MIOP@NodeB, and to do breakout of low-speedchannels at MIOP@RNC. In another example, MIOP@NodeB may have a cache,MIOP@RNC may also have a cache, and MIOP@Core may also have a cache. Ifthere is a cache miss at MIOP@NodeB, the cache in MIOP@RNC could bechecked, followed by checking the cache in MIOP@Core. Thus, decisionscan be dynamically made according to varying conditions of what data tocache and where.

To support the MIOP services that are possible with the mobile datanetwork 200 shown in FIG. 2, the preferred configuration of MIOP@NodeB210 is a combination of hardware and software. The preferredconfiguration of MIOP@RNC 220 is also a combination of hardware andsoftware. The preferred configuration of MIOP@Core 230 is software only,and can be run on any suitable hardware in the core network. Thepreferred configuration of MIOP@NMS 240 is software only, and can alsobe run on any suitable hardware in the core network.

In the most preferred implementation, the various functions ofMIOP@NodeB 210, MIOP@RNC 220, MIOP@Core 230, and MIOP@NMS 240 areperformed in a manner that is nearly transparent to existing equipmentin the mobile data network. Thus, the components in prior art mobiledata network 100 that are also shown in the mobile data network 200 inFIG. 2 have no knowledge of the existence of the various MIOPcomponents, with the exception of existing routers that may need to beupdated with routing entries corresponding to the MIOP components. TheMIOP services are provided by the MIOP components in a way that requiresno changes to hardware and only minor changes to software (i.e., newrouter entries) in any existing equipment in the mobile data network,thereby making the operation of the MIOP components transparent to theexisting equipment once the MIOP components are installed andconfigured. The result is a system for upgrading existing mobile datanetworks as shown in FIG. 1 in a way that does not require extensivehardware or software changes to the existing equipment. The MIOPservices herein can thus be performed without requiring significantcapital expenditures to replace or reprogram existing equipment.

Referring to FIG. 24, one suitable hardware architecture for MIOP@NodeB2410 is shown. MIOP@NodeB 2410 is one specific implementation forMIOP@NodeB 210 shown in FIGS. 2, 4 and 17. MIOP@NodeB 2410 is onesuitable example of a breakout component that may be incorporated intoan existing mobile data network. The specific architecture was developedbased on a balance between needed function and cost. The hardwarecomponents shown in FIG. 24 may be common off-the-shelf components. Theyare interconnected and programmed in a way to provided needed functionwhile keeping the cost low by using off-the-shelf components. Thehardware components shown in FIG. 24 include a system controller 2412, aservice processor 2420, a security subsystem 2430, and a telco breakoutsubsystem 2450. In one suitable implementation for MIOP@NodeB 2410 shownin FIG. 24, the system controller 2412 is an x86 system. The serviceprocessor 2420 is an IBM Integrated Management Module version 2 (IMMv2).The security subsystem 2430 includes an ATMEL processor and anon-volatile memory such as a battery-backed RAM for holding keys. Thetelco breakout system 2450 performs the breakout functions forMIOP@NodeB 2410. In this specific implementation, the x86 and IMMv2 areboth on a motherboard that includes a Peripheral Component InterconnectExpress (PCIe) slot. A riser card plugged into the PCIe slot on themotherboard includes the security subsystem 2430, along with two PCIeslots for the telco breakout system 2450. The telco breakout system 2450may include a telco card and a breakout card that performs breakout asdescribed in detail above with respect to FIG. 17.

One suitable x86 processor that could serve as system controller 2412 isthe Intel Xeon E3-1220 processor. One suitable service processor 2420 isan IBM Renassas SH7757, but other known service processors could beused. One suitable processor for the security subsystem 2430 is an ATMELprocessor UC3L064, and one suitable non-volatile memory for the securitysubsystem 2430 is a DS3645 battery-backed RAM from Maxim. One suitableprocessor for the telco breakout subsystem 2450 is the Cavium Octeon IICN63XX.

Various functions of the MIOP@NodeB 2410 shown in FIG. 24 are dividedamongst the different components. Referring to FIG. 25, the systemcontroller 2412 implements an appliance mechanism 2510, a platformservices mechanism 2520, and an edge application serving mechanism 2530.The appliance mechanism 2510 provides an interface to MIOP@NodeB thathides the underlying hardware and software architecture by providing aninterface that allows configuring and using MIOP@NodeB without knowingthe details of the underlying hardware and software. The platformservices mechanism 2520 provides messaging support between thecomponents in MIOP@NodeB, allows managing the configuration of thehardware and software in MIOP@NodeB, and monitors the health of thecomponents in MIOP@NodeB. The edge application serving mechanism 2530allows software applications to run within MIOP@NodeB that perform oneor more mobile network services at the edge of the mobile data networkin response to broken-out data received from user equipment or sent touser equipment. In the most preferred implementation, the data brokenout and operated on by MIOP@NodeB is Internet Protocol (IP) datarequests received from the user equipment and IP data sent to the userequipment. The edge application service mechanism 2530 may serve bothapplications provided by the provider of the mobile data network, andmay also serve third party applications as well. The edge applicationserving mechanism 2530 provides a plurality of mobile network servicesto user equipment at the edge of the mobile data network in a way thatis mostly transparent to existing equipment in the mobile data network.

Referring to FIG. 26, the service processor 2420 includes a thermalmonitor/control mechanism 2610, a hardware monitor 2620, a fail-to-wirecontrol mechanism 2630, a key mechanism 2640, a system controllermonitor/reset mechanism 2650, and a display/indicator mechanism 2660.The thermal monitor/control mechanism 2610 monitors temperatures andactivates controls to address thermal conditions. For example, thethermal monitor 2610 monitors temperature within the MIOP@NodeBenclosure, and activates one or more fans within the enclosure when thetemperature exceeds some threshold. In addition, the thermalmonitor/control mechanism 2610 may also monitor temperature in thebasestation external to the MIOP@NodeB enclosure, and may controlenvironmental systems that heat and cool the basestation itself externalto the MIOP@NodeB enclosure. The hardware monitor 2620 monitors hardwarefor errors. Examples of hardware that could be monitored with hardwaremonitor 2620 include CPUs, memory, power supplies, etc. The hardwaremonitor 2620 could monitor any of the hardware within MIOP@NodeB 2410.

The fail-to-wire control mechanism 2630 is used to switch a fail-to-wireswitch to a first operational state when MIOP@NodeB is fully functionalthat causes data between the upstream computer system and the downstreamcomputer system to be processed by MIOP@NodeB 2410, and to a secondfailed state that causes data to be passed directly between the upstreamcomputer system and the downstream computer system without beingprocessed by MIOP@NodeB 2410. The key mechanism 2640 provides aninterface for accessing the security subsystem 2430. The systemcontroller monitor/reset mechanism 2650 monitors the state of the systemcontroller 2412, and resets the system controller 2412 when needed. Thedisplay/indicator mechanism 2660 activates a display and indicators onthe front panel of the MIOP@NodeB to provide a visual indication of thestatus of MIOP@NodeB.

Referring to FIG. 27, the security subsystem 2430 includes a key storage2702 that is a non-volatile storage for keys, such as a battery-backedRAM. The security subsystem 2430 further includes a key mechanism 2710and a tamper detection mechanism 2720. Key mechanism 2710 stores keys tothe non-volatile key storage 2702 and retrieves keys from thenon-volatile key storage 2702. Any suitable keys could be stored in thekey storage 2702. The security subsystem 2430 controls access to thekeys stored in key storage 2702 using key mechanism 2710. The tamperdetection mechanism 2720 detects physical tampering of MIOP@NodeB, andperforms functions to protect sensitive information within MIOP@NodeBwhen physical tampering is detected. The enclosure for MIOP@NodeBincludes tamper switches that are triggered if an unauthorized persontries to open the box. In response, the tamper detection mechanism maytake any suitable action, including actions to protect sensitiveinformation, such as not allowing MIOP@NodeB to boot the next time,erasing keys in key storage 2702, and actions to sound an alarm that thetampering has occurred.

Referring to FIG. 28, the telco breakout system 2450 includes a telcocard 2802, a breakout mechanism 2810, and an overlay network mechanism2820. Telco card 2802 is any suitable card for handling networkcommunications in the radio access network. Breakout mechanism 2810 isone specific implementation for breakout mechanism 410 shown in FIG. 4.Breakout mechanism 2810 performs the breakout functions as described indetail above. The breakout mechanism 2810 interrupts the connectionbetween the NodeB and the next upstream component in the radio accessnetwork, such as the RNC, as shown in FIG. 2. Non-broken out data fromthe upstream component is simply passed through MIOP@NodeB to the NodeB.Non-broken out data from the NodeB is simply passed through MIOP@NodeBto the upstream component. Note the path for non-broken out data is thetraditional path for data in the mobile data network before the MIOPcomponents were added. Broken-out data is intercepted by MIOP@NodeB, andmay be appropriate processed at MIOP@NodeB, or may be routed to anupstream component via a different data path, such as to MIOP@RNC viathe overlay network. The telco breakout system 2450 includes an overlaynetwork mechanism 2820 that allows MIOP@NodeB 2410 to communicate viathe overlay network. For example, MIOP@NodeB 2410 could use overlaynetwork mechanism 2820 to communicate with MIOP@RNC 220 or tocommunicate with other MIOP@NodeBs.

The edge application mechanism 2530 may provide many different mobilenetwork services. Examples of some of these services are shown in FIG.29. This specific implementation for edge application mechanism 2530includes an edge caching mechanism 2910, a push-based service mechanism2920, a third party edge application serving mechanism 2930, ananalytics mechanism 2940, a filtering mechanism 2950, arevenue-producing service mechanism 2960, and a charging mechanism 2970.The edge caching mechanism 2910 is one suitable implementation of edgecache mechanism 1730 shown in FIG. 17, and includes the functionsdescribed above with respect to FIG. 17. The push-based servicemechanism 2920 provides support for any suitable push-based service,whether currently known or developed in the future. Examples of knownpush-based services include without limitation incoming text messages,incoming e-mail, instant messaging, peer-to-peer file transfers, etc.

The third party edge application serving mechanism 2930 allows runningthird party applications that provide mobile network services at theedge of the mobile data network. The capability provided by the thirdparty edge application serving mechanism 2930 opens up new ways togenerate revenue in the mobile data network. The operator of the mobiledata network may generate revenue both from third parties that offeredge applications and from subscribers who purchase or use edgeapplications. Third party applications for user equipment has become avery profitable business. By also providing third party applicationsthat can run at the edge of the mobile data network, the experience ofthe user can be enhanced. For example, face recognition software is verycompute-intensive. If the user were to download an application to theuser equipment to perform face recognition in digital photographs, theperformance of the user equipment could suffer. Instead, the user couldsubscribe to or purchase a third party application that runs at the edgeof the mobile data network (executed by the third party edge applicationserving mechanism 2930) that performs face recognition. This would allowa subscriber to upload a photo and have the hardware resources inMIOP@NodeB perform the face recognition instead of performing the facerecognition on the user equipment. We see from this simple example it ispossible to perform a large number of different functions at the edge ofthe mobile data network that were previously performed in the userequipment or upstream in the mobile data network. By providingapplications at the edge of the mobile data network, the quality ofservice for subscribers increases.

The analytics mechanism 2940 performs analysis of broken-out data. Theresults of the analysis may be used for any suitable purpose or in anysuitable way. For example, the analytics mechanism 2940 could analyze IPtraffic on MIOP@NodeB, and use the results of the analysis to moreintelligently cache IP data by edge caching mechanism 2910. In addition,the analytics mechanism 2940 makes other revenue-producing servicespossible. For example, the analytics mechanism 2940 could track IPtraffic and provide advertisements targeted to user equipment in aparticular geographic area served by the basestation. Because data isbeing broken out at MIOP@NodeB, the analytics mechanism 2940 may performany suitable analysis on the broken out data for any suitable purpose.

The filtering mechanism 2950 allows filtering content delivered to theuser equipment by MIOP@NodeB. For example, the filtering mechanism 2950could block access to adult websites by minors. This could be done, forexample, via an application on the user equipment or via a third partyedge application that would inform MIOP@NodeB of access restrictions,which the filtering mechanism 2950 could enforce. The filteringmechanism 2950 could also filter data delivered to the user equipmentbased on preferences specified by the user. For example, if thesubscriber is an economist and wants news feeds regarding economicissues, and does not want to read news stories relating to elections orpolitics, the subscriber could specify to exclude all stories thatinclude the word “election” or “politics” in the headline. Of course,many other types of filtering could be performed by the filteringmechanism 2950. The filtering mechanism 2950 preferably performs anysuitable data filtering function or functions, whether currently knownor developed in the future.

The revenue-producing service mechanism 2960 provides new opportunitiesfor the provider of the mobile data network to generate revenue based onthe various functions MIOP@NodeB provides. An example was given abovewhere the analytics mechanism 2940 can perform analysis of data brokenout by MIOP@NodeB, and this analysis could be provided by therevenue-producing service mechanism 2960 to interested parties for aprice, thereby providing a new way to generate revenue in the mobiledata network. Revenue-producing service mechanism 2960 broadlyencompasses any way to generate revenue in the mobile data network basedon the specific services provided by any of the MIOP components.

The charging mechanism 2970 provides a way for MIOP@NodeB to inform theupstream components in the mobile data network when the subscriberaccesses data that should incur a charge. Because data may be providedto the subscriber directly by MIOP@NodeB without that data flowingthrough the normal channels in the mobile data network, the chargingmechanism 2970 provides a way for MIOP@NodeB to charge the subscriberfor services provided by MIOP@NodeB of which the core network is notaware. The charging mechanism 2970 tracks the activity of the user thatshould incur a charge, then informs a charging application in the corenetwork that is responsible for charging the subscriber of the chargesthat should be billed.

The hardware architecture of MIOP@NodeB shown in FIGS. 24-29 allowsMIOP@NodeB to function in a way that is mostly transparent to existingequipment in the mobile data network. For example, if an IP request fromuser equipment may be satisfied from data held in a cache by edgecaching mechanism 2910, the data may be delivered directly to the userequipment by MIOP@NodeB without traversing the entire mobile datanetwork to reach the Internet to retrieve the needed data. This cangreatly improve the quality of service for subscribers by performing somany useful functions at the edge of the mobile data network. The corenetwork will have no idea that MIOP@NodeB handled the data request,which means the backhaul on the mobile data network is significantlyreduced. The MIOP components disclosed herein thus provide a way tosignificantly improve performance in a mobile data network by adding theMIOP components to an existing mobile data network without affectingmost of the functions that already existed in the mobile data network.

In the prior art, service processors are known that provide systemmonitoring and control functions. For example, a system 3000 is shown inFIG. 30 to include a system controller 3010 coupled via some interface3030 to a service processor 3020. The service processor 3020 performs aset of monitoring and control functions 3040 that may include systemcontroller monitoring, system thermal monitoring, power management,voltage monitoring, control of light-emitting diodes (LEDs) on a displaypanel, logging and reporting of errors, reboot control, system fancontrol, and hardware health monitoring. The service processor thusprovides a service interface for providing all of the functions 3040 forthe system 3000 in FIG. 30.

The functions 3040 provided in a known service processor do not provideall of the monitoring and control functions needed in the MIOP@NodeBbreakout component. So the question becomes how and where to implementthe required monitoring and control functions in MIOP@NodeB. A firstpossible implementation would be to implement all needed monitoring andcontrol functions on the system controller. This first implementation isnot desirable because failure of the system controller would meanfailure of all the monitoring and control functions. A second possibleimplementation would be to reprogram firmware of a service processor toprovide all of the needed functions. The result would be a serviceprocessor that is specialized for MIOP@NodeB to provide all the neededfunctions, and thus would create a component that is no longer commonoff-the-shelf hardware. A third possible implementation would still usecommon off-the-shelf hardware for the system controller and serviceprocessor, yet define a service interface with layered control wheresome functions are performed on the system controller while backupfunctions are performed by the service processor should the systemcontroller fail. The disclosure and claims herein are directed to thisthird implementation that provides such a service interface with layeredcontrol, as described in detail below. By implementing the serviceinterface with layered control, default behaviors may be defined for theservice processor while allowing for extending the functions of theservice interface in the system controller according to specific needs.

Referring to FIG. 31, a system 3100 includes a system controller 3110and a service processor 3120 coupled via an intelligent platformmanagement interface (IPMI) 3130 and via an inter-integrated circuit(i2c) bus 3140. System controller 3110 is one suitable implementationfor the system controller 2412 shown in FIG. 24. Service processor 3120is one suitable implementation for the service processor 2420 in FIG.24. The needed monitoring and control functions in MIOP@NodeB aredefined so the system controller 3110 provides many of these primaryfunctions, with the service processor 3120 providing many backupfunctions should the system controller go down. System controller 3110includes primary functions 3112 that are functions normally performed bya service processor, such as system thermal monitoring, powermanagement, voltage monitoring, LED control for LEDs on a display panel,error reporting, system fan control, hardware health monitoring, andreboot control. Implementing these primary functions on the systemcontroller allows these primary functions to be defined in programmingthat does not affect the common off-the-shelf character of the systemcontroller. Other functions specific to the MIOP@NodeB architecture arealso needed, and are provided in the system controller 3110 by new MIOPprimary functions 3114, which include LCD control for an LCD display ona display panel, tamper handling, fail-to-wire, and filter management.Tamper handling determines how a tamper event is handled. For example,the MIOP@NodeB enclosure may include tamper switches that indicate atamper event when the enclosure is opened while the MIOP@NodeB isrunning Other environmental conditions could also indicate a tamperevent, such as overheating, over-voltage, etc. The fail-to-wire functionmonitors the health of MIOP@NodeB. Corrective action may be taken tocorrect problems in MIOP@NodeB. But once the functionality of MIOP@NodeBfalls below some defined threshold, the fail-to-wire function instructsa fail-to-wire module to switch its state so the MIOP@NodeB iseffectively removed from the network transmission paths in the mobiledata network. The result is directly connecting the NodeB 130 and RNC140 in FIG. 2 when the MIOP@NodeB fails so the mobile data network cancontinue to function as if the MIOP@NodeB is not present. Filtermanagement allows determining when an air filter on MIOP@NodeB should bechanged, and interacting with a user via an LCD panel on MIOP@NodeB whena filter is changed.

The service processor 3120 defines different functions, includingprimary function 3122, backup functions for functions defined on thesystem controller 3124, altered functions 3126, and new MIOP backupfunctions 3128. The primary functions 3122 include any functions thatare normally performed by known service processors, and are alsoperformed by the service processor 3120 in MIOP@NodeB. System controllermonitoring is an example of a primary function that would be performedby the service processor 3120. For example, the system controllermonitoring could setup a watchdog timer process that must be notified ona periodic basis by the hardware health monitoring function on thesystem controller 3110. As long as the system controller 3110 isfunctioning properly, the hardware health monitoring function willretrigger the watchdog timer before it times out. When the systemcontroller 3110 stops functioning properly, the watchdog timer will timeout, indicating to the system controller monitoring function in theservice processor that the system controller is not functioningproperly. When the system controller monitoring in the service processorindicates the system controller is not functioning properly, the serviceprocessor will provide backup functions 3124 and 3128, thereby providingtwo different layers of control for the service interface.

Backup functions 3124 include power management, voltage monitoring, LEDcontrol, and system fan control. Backup functions 3128 for the new MIOPfunctions include LCD control, tamper handling, and fail-to-wire. Theservice processor 3120 also provides altered functions 3126, which meansfunctions that operate differently than on most service processorswithout requiring reprogramming of the service processors. Alteredfunctions 3126 include query thermal sensors, error logging, andhardware alerts. The altered functions are described in more detailbelow.

The system controller 3110 and service processor 3120 are connected viaan intelligent platform management interface (IPMI) 3130. IPMI is aknown industry standard interface for platform management, and providesmany different commands to enable and disable settings, provideconfiguration, request data, and other functions. The IPMI 3130 allowsthe system controller 3110 and service processor 3120 to communicate sothat a function may be split between the two. The altered functions 3126are examples of functions that have been split, with one part performedon the service processor and the other part performed on the systemcontroller. While querying thermal sensors is normally part of systemthermal monitoring in the prior art, the service interface provided inFIG. 31 allows splitting the system thermal monitoring into two parts,the querying of thermal sensors by the service processor and thensending the thermal sensor data to the system controller 3110 via IPMI3130 so the system thermal monitoring can be performed on the systemcontroller 3110. In similar fashion, the primary function of Log andReport Errors shown in FIG. 30 can be effectively split on the serviceinterface provided by system controller 3110 and service processor 3120by performing error logging on the service processor 3120 and errorreporting on the system controller 3110, where the error log is sentfrom the service processor 3120 to the system controller 3110 over theIPMI 3130 so the error log can be reported by the error reportingfunction on the system controller 3110 to a different MIOP entity, suchas MIOP@NMS. In similar fashion, the hardware health monitoring shown inFIG. 31 can be split into hardware alerts received by the serviceprocessor, and processing and reporting the hardware alerts by thesystem controller 3110. This requires the hardware alerts from theservice processor 3120 to be communicated to the system controller 3110via IPMI 3130. Of course, other functions could be split between theservice processor and system controller within the scope of thedisclosure and claims herein.

The system controller 3110 and service processor 3120 are also connectedtogether and to other items on an inter-integrated circuit (i2c) bus3140. For example, the i2c bus 3140 is shown in FIG. 31 to connect thesystem controller 3110 and service processor 3120 to a front panel 3150,LEDs 3160, and monitoring registers 3170. The front panel 3150 providesinput in the form of push buttons or keys, the LEDs 3160 provide visualstatus indicators, and the monitoring registers are used to detectwhether certain components (such as the air filter in MIOP@NodeB) arepresent. The i2c bus is a defined bus architecture known in the art,where one device acts as a master and the others act as slaves. When thesystem controller 3110 is functioning properly, it will be the master onthe i2c bus 3140. When the system controller 3110 is not functioningproperly, the service processor 3120 becomes the master on the i2c bus3140, allowing the service processor to control the same components thatwere previously controlled by the system controller 3110.

Referring to FIG. 32, a method 3200 shows the steps for defining theservice interface with different layers of control as shown in FIG. 31.The primary functions on the system controller are defined (step 3210).New MIOP primary functions on the system controller are also defined(step 3220). Backup functions are defined on the service processor (step3230). New MIOP backup functions are also defined on the serviceprocessor (step 3240). Altered functions on the service processor arealso defined (step 3250). Interactions via the IPMI between functions onthe system controller and functions on the service processor are thendefined (step 3260). At this point the service interface has beendefined and configured with multiple levels of control, and is ready foruse when MIOP@NodeB boots up.

Referring to FIG. 33, a method 3300 shows the layering of control in theservice interface. The service processor monitors the system controller(step 3310). When the system controller is OK (step 3320=YES), thesystem controller performs its primary system functions (step 3330).When the system controller is not OK (step 3320=NO), the serviceprocessor performs the backup system functions (step 3340). Method 3300allows for gracefully bringing up MIOP@NodeB, and also provides fordetecting a failure in the system controller and backing up the systemcontroller with the service processor. When MIOP@NodeB boots up, theservice processor first boots up. Once the service processor is workingproperly, the system controller is allowed to boot. Once the serviceprocessor is initialized and working properly, the watchdog timer willdetect the system controller is not yet working (step 3320=NO), whichmeans the system controller will perform its backup system functions3340 until the system controller boots and initializes correctly (step3320=YES), and which time the system controller will take over andperform the primary system functions. If at any time during theoperation of MIOP@NodeB the system controller fails (step 3320=NO), theservice processor will still perform the backup system functions (step3340). Thus, a failure of the system controller does not causeMIOP@NodeB to lose all its monitoring and control functions because theservice processor will still provide its backup system functions evenafter the system controller fails. In a different case when the systemcontroller is unable to perform some function but can continue toperform other functions, the service processor may perform its backupfunctions for the function the system controller can no longer perform,while allowing the system controller to continue to perform thefunctions it is able to perform. This provides function-by-functiongranularity in the service processor backing up the functions of thesystem controller.

Examples are given in FIGS. 34-37 that show how the primary control onthe system controller may differ from the backup control on the serviceprocessor. FIG. 34 shows the primary system fan control on the systemcontroller monitors temperature of MIOP@NodeB, and turns on fansone-at-a-time as needed. However, the backup fan control in the serviceprocessor indicates with the system controller is OK, do nothing, butwhen the system controller is not OK, turn an all fans. We see theprimary system fan control and backup system fan control may thusperform different functions. By layering control of the serviceinterface over two different subsystems (system controller and serviceprocessor), powerful and flexible functions may be achieved in commonoff-the-shelf components.

Referring to FIG. 35, the primary fail-to-wire control in the systemcontroller takes corrective actions to improve system performance, butif the improvements do not bring the performance of the systemcontroller to an acceptable level, then fail-to-wire. The backupfail-to-wire control in the service processor states when the systemcontroller is OK, do nothing, but when the system controller is not OK,fail-to-wire. This makes sense because if the system controller is notOK, it is impossible for MIOP@NodeB to perform its normal functions, sothe fail-to-wire effectively removes the MIOP@NodeB from the networkcommunication paths in the mobile data network, allowing the mobile datanetwork to function as if the MIOP@NodeB is not present.

FIG. 36 shows how a function may be split between the system controllerand service processor due to the service interface. The serviceprocessor may perform error logging control, which logs errors, andsends the error log to the system controller upon request. The systemcontroller includes error reporting control that requests the error logfrom the service processor, receives the error log from the serviceprocessor, and transmits the error log to another network entity, suchas MIOP@NMS. By implementing different portions of the error logging andreporting function on different subsystems that are interconnected viaIPMI, a very flexible and powerful service interface is achieved.

FIG. 37 is another example showing how a function may be split betweenthe system controller and service processor due to the serviceinterface. The service processor may query thermal sensors, then sendthe sensor readings to the system controller upon request. The systemcontroller requests thermal sensor readings from the service processor,and if too hot, takes corrective action. The gathering of sensor data isthus performed by the service processor, while the decision of what todo with the sensor data is performed by the system controller.

While the examples in FIGS. 34-37 show different functions on the systemcontroller and the service processor, the disclosure and claims hereinexpressly extend to any suitable implementation of functions on thedifferent layers, whether they be the same or different. When theimplementation of functions is the same for the primary function on thesystem controller and the backup function on the service processor,there is still the advantage of layered control that assures the backupfunction on the service processor will still execute even if the systemcontroller fails.

The service interface with layers of control as disclosed in FIG. 31 andclaimed herein is symbolically represented in FIG. 38 to include asystem controller 3110 that provides primary control on a first layer,and a service processor 3120 that provides backup control on a secondlayer should the system controller fail to function properly. The twolayers of control provide redundancy for important functions so failureof the system controller does not result in failure of all monitoringand control functions in MIOP@NodeB.

The mobile data network disclosed herein includes MIOP components thatprovide a variety of different services that are not possible in priorart mobile data network 100. In the most preferred implementation, theMIOP components do not affect voice traffic in the mobile data network.In addition to performing optimizations that will enhance performance inthe form of improved download speeds, lower latency for access, orimproved quality of experience in viewing multimedia on the mobile datanetwork, the MIOP architecture also provides additional capabilitiesthat may produce new revenue-generating activities for the carrier. Forexample, analytics may be performed on subscriber sessions that allowtargeting specific subscribers with additional services from the carrierto generate additional revenue. For example, subscribers congregatingfor a live music event may be sent promotions on paid for media relatedto that event. In another example, subscribers getting off a train maybe sent a coupon promoting a particular shuttle company as they walk upthe platform towards the street curb. Also, premium web content in theform of video or other multimedia may be served from local storage andthe subscriber would pay for the additional content and quality ofservice.

While the mobile data network in FIG. 2 and discussed herein is in thecontext of a 3G mobile data network, the disclosure and claims hereinexpressly extend to other networks as well, including Long TermEvolution (LTE) networks, flat RAN networks, and code division multipleaccess (CDMA) networks.

As will be appreciated by one skilled in the art, aspects of the presentinvention may be embodied as a system, method or computer programproduct. Accordingly, aspects of the present invention may take the formof an entirely hardware embodiment, an entirely software embodiment(including firmware, resident software, micro-code, etc.) or anembodiment combining software and hardware aspects that may allgenerally be referred to herein as a “circuit,” “module” or “system.”Furthermore, aspects of the present invention may take the form of acomputer program product embodied in one or more computer readablemedium(s) having computer readable program code embodied thereon.

Any combination of one or more computer readable medium(s) may beutilized. The computer readable medium may be a computer readable signalmedium or a computer readable storage medium. A computer readablestorage medium may be, for example, but not limited to, an electronic,magnetic, optical, electromagnetic, infrared, or semiconductor system,apparatus, or device, or any suitable combination of the foregoing. Morespecific examples (a non-exhaustive list) of the computer readablestorage medium would include the following: an electrical connectionhaving one or more wires, a portable computer diskette, a hard disk, arandom access memory (RAM), a read-only memory (ROM), an erasableprogrammable read-only memory (EPROM or Flash memory), an optical fiber,a portable compact disc read-only memory (CD-ROM), an optical storagedevice, a magnetic storage device, or any suitable combination of theforegoing. In the context of this document, a computer readable storagemedium may be any tangible medium that can contain, or store a programfor use by or in connection with an instruction execution system,apparatus, or device.

A computer readable signal medium may include a propagated data signalwith computer readable program code embodied therein, for example, inbaseband or as part of a carrier wave. Such a propagated signal may takeany of a variety of forms, including, but not limited to,electro-magnetic, optical, or any suitable combination thereof. Acomputer readable signal medium may be any computer readable medium thatis not a computer readable storage medium and that can communicate,propagate, or transport a program for use by or in connection with aninstruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmittedusing any appropriate medium, including but not limited to wireless,wireline, optical fiber cable, RF, etc., or any suitable combination ofthe foregoing.

Computer program code for carrying out operations for aspects of thepresent invention may be written in any combination of one or moreprogramming languages, including an object oriented programming languagesuch as Java, Smalltalk, C++ or the like and conventional proceduralprogramming languages, such as the “C” programming language, StreamsProcessing language, or similar programming languages. The program codemay execute entirely on the user's computer, partly on the user'scomputer, as a stand-alone software package, partly on the user'scomputer and partly on a remote computer or entirely on the remotecomputer or server. In the latter scenario, the remote computer may beconnected to the user's computer through any type of network, includinga local area network (LAN) or a wide area network (WAN), or theconnection may be made to an external computer (for example, through theInternet using an Internet Service Provider).

Aspects of the present invention are described herein with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems) and computer program products according to embodiments of theinvention. It will be understood that each block of the flowchartillustrations and/or block diagrams, and combinations of blocks in theflowchart illustrations and/or block diagrams, can be implemented bycomputer program instructions. These computer program instructions maybe provided to a processor of a general purpose computer, specialpurpose computer, or other programmable data processing apparatus toproduce a machine, such that the instructions, which execute via theprocessor of the computer or other programmable data processingapparatus, create means for implementing the functions/acts specified inthe flowchart and/or block diagram block or blocks.

These computer program instructions may also be stored in a computerreadable medium that can direct a computer, other programmable dataprocessing apparatus, or other devices to function in a particularmanner, such that the instructions stored in the computer readablemedium produce an article of manufacture including instructions whichimplement the function/act specified in the flowchart and/or blockdiagram block or blocks.

The computer program instructions may also be loaded onto a computer,other programmable data processing apparatus, or other devices to causea series of operational steps to be performed on the computer, otherprogrammable apparatus or other devices to produce a computerimplemented process such that the instructions which execute on thecomputer or other programmable apparatus provide processes forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks.

The methods disclosed herein may be performed as part of providing aweb-based service. Such a service could include, for example, offeringthe method to online users in exchange for payment.

The disclosure and claims are directed to mobile network servicesperformed in a mobile data network in a way that is transparent to mostof the existing equipment in the mobile data network. The mobile datanetwork includes a radio access network and a core network. A breakoutcomponent in the radio access network breaks out data coming from abasestation, and performs one or more mobile network services at theedge of the mobile data network based on the broken out data. Thebreakout component includes a service interface that performs primarycontrol by one system, and backup control by a different system.

One skilled in the art will appreciate that many variations are possiblewithin the scope of the claims. Thus, while the disclosure isparticularly shown and described above, it will be understood by thoseskilled in the art that these and other changes in form and details maybe made therein without departing from the spirit and scope of theclaims.

1. A mobile data network comprising: a plurality of basestations, eachbasestation communicating with a corresponding antenna that transmitsand receives radio signals to and from user equipment, wherein theplurality of basestations are part of a radio access network thatcommunicates with a core network in the mobile data network, eachbasestation comprising: a breakout component that defines an existingfirst data path in the radio access network for non-broken out data,defines a second data path for broken out data, identifies first datacorresponding to first user equipment received from a correspondingbasestation as data to be broken out, sends the first data on the seconddata path, and forwards other data that is not broken out on the firstdata path, the breakout component comprising: a first subsystemproviding primary control of monitoring and control functions for thebreakout component; and a second subsystem providing backup control ofat least some of the monitoring and control functions for the breakoutcomponent.
 2. The mobile data network of claim 1 wherein the firstsubsystem comprises a system controller.
 3. The mobile data network ofclaim 1 wherein the second subsystem comprises a service processor. 4.The mobile data network of claim 1 wherein the monitoring and controlfunctions comprise: system thermal monitoring; power management; andvoltage monitoring.
 5. The mobile data network of claim 4 wherein themonitoring and control functions further comprise: display control;error reporting; system fan control; and hardware health monitoring. 6.The mobile data network of claim 5 wherein the monitoring and controlfunctions further comprise: tamper handling that determines how adetected tamper of the breakout component is handled; and fail-to-wirecontrol that determines when the breakout component is not functioningproperly and in response causes a fail-to-wire mechanism to remove thebreakout component from data transmission paths in the mobile datanetwork.
 7. The mobile data network of claim 1 wherein a first portionof a first function is performed on the first subsystem and a secondportion of the first function is performed on the second subsystem. 8.The mobile data network of claim 1 further comprising a controlinterface between the first subsystem and the second subsystem thatsupports communication between the first subsystem and the secondsubsystem.
 9. The mobile data network of claim 1 wherein the controlinterface is an intelligent platform management interface.
 10. Themobile data network of claim 1 wherein the second subsystem monitorshealth of the first subsystem, and when the first subsystem is notfunctioning properly, the second subsystem provides the backup controlof at least some of the monitoring and control functions for thebreakout component.
 11. A mobile data network comprising: a plurality ofbasestations, each basestation communicating with a correspondingantenna that transmits and receives radio signals to and from userequipment, wherein the plurality of basestations are part of a radioaccess network that communicates with a core network in the mobile datanetwork, each basestation comprising: a breakout component connected toa NodeB in the basestation and connected to an upstream computer system,the breakout component comprising: a system controller that controlsfunction of the breakout component and provides primary control ofmonitoring and control functions for the breakout component, wherein themonitoring and control functions comprise: system thermal monitoring;power management; voltage monitoring; display control; error reporting;system fan control; hardware health monitoring; tamper handling thatdetermines how a detected tamper of the breakout component is handled;and fail-to-wire control that determines when the breakout component isnot functioning properly and in response causes a fail-to-wire mechanismto remove the breakout component from data transmission paths in themobile data network; a service processor that monitors the systemcontroller for proper operation and provides backup control of at leastsome of the monitoring and control functions when the system controlleris not functioning properly; an intelligent platform managementinterface (IPMI) between the system controller and the serviceprocessor, wherein a first portion of a first function is performed onthe system controller, a second portion of the first function isperformed on the service processor, and the system controller andservice processor communicate on the IPMI to accomplish the firstfunction; a security subsystem that provides secure access to keysstored in a non-volatile memory; and a telco breakout system thatcomprises: a first service mechanism that defines an existing first datapath in the radio access network for non-broken out data, defines asecond data path for broken out data, identifies first datacorresponding to first user equipment received from a correspondingbasestation as data to be broken out, sends the first data on the seconddata path, and forwards other data that is not broken out on the firstdata path. 12-22. (canceled)